Attachment for lamp-burners.



c. VESSIERE.

ATTACHMENT FOR LAMP BURNERS.

APPLICATION FILED JAN-23, 1 912.

Patented June 4, 1912.

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ATTACHMENT FOB. LAMP BURNERS.

APPLICATION FILED JAN.23. 1912.

Patented June 4, 1912;

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CHARLES VESSIERE, or PARIS, FRANCE.

ATTACHMENT FOR LAMP-BURNERS.'

To all whom it may concern:

Be it known that I, CHARLES Vnssriann, a citizen of the Republic of France, and resident of Paris, France, have inventednew and useful Improvements in Attachments for Lamp-Burners, which improvements are fully set forth in the following specification.

In the devices hitherto known for adjusting the height of the flame in lamps with wicks, the wick-holder tube is surrounded by a concentric tube secured to the gallery supporting the glass chimney, and the height of the free flame is reduced at will by raising the said tube relatively to the wick holder tube.

Rigid connection of the movable tube of the gallery to the glass chimney presents great disadvantages. It necessitates moving heavy and fragile parts, and renders more difficult the stoppage of the adjusting tube in the by-pass position and in any intermediate positions. Finally, if after the apparatus has been placed so as to burn with the by-pass flame, during the return of the mechanism to the normal position for full light, care has not been taken to accompany the mechanism in its movements, the sudden fall of the operating part is liable to break the glass chimney.

The new device forming the subject of this invention, does away with all these disadvantages. It comprises, like the well known devices, a by-pass tube concentric with the wick holder tube, but the said tube, instead of being secured to the gallery, is simply guided in a socket projecting from the support by the gallery, and held concentric with the wick holder tube by means of a corrugated sleeve secured to its inner wall. The up and down movements of the loose by-pass tube are insured by means of an operating member guided in the support of the gallery.

Practical constructions according to this invention are illustrated by way of example in the accompanying drawings, in which- Figure 1 is a side elevation, partly in section, of one construction, Fig. 2 a longitudinal section, Fig. 3 a horizontal section on the line AA of Fig. 2, and Fig. 4 a side elevation, partly in section on the line B-B of Fig. 2. Figs. 5 to 9 show a second construction, Fig. 5 being a side elevation, partly in section on the line AA of Fig. 6, Fig. 6 a plan view of Fig. 5, Fig. 7 a partial section on the line BB of Fig. 6 and Specification of Letters Patent.

Patented June 4, 1912.

Application filed January 23, 1912. seriai No. 672,938.

Fig. 8 a perspective View of the by-pass tube. Fig. 9 is a plan view showing the disk forming the support for the gallery, in the body of which are arranged according to this invention, the guide for the sliding member operating the bypass tube, and two additional guides for the projections of'the said member.

In Figs. 1 to 4, a is the wick-holder tube of a lampof any kind. b is the support of the, gallery 0. According to this invention, the by-pass tube d is guided in a sleeve 6 projecting into the interior of the gallery and secured to the support 6. The said tube (Z is guided inside by the wick-holder tube 64, either directly or, preferably, as shown in the drawing, by means of a corrugated sleeve f secured to its inner wall. The height of the said corrugated sleeve f is less than that of the by-pass tube, so that the upper edge of the said sleeve is below the upper level of the wick-holder tube, when the by-pass tube is in its extreme upper position. The up and down movements of the by-pass tube (Z are obtained by means of an operating member which is guided on the support of the gallery.

In the example illustrated in Figs. 1 to 4-, the support of the gallery carries a guide 9 for a driving member h terminating inside in a fork 2' 2' with prongs raised obliquely relatively to the plane of the said driving member. In each of the said prongs z is provided a guide 2" with which engages a finger at projecting from the outer wall of the by-pass tube cl. The two fingers d might be constituted for instance, by means of a wire of semicircular cross-section soldered to the wall of the tube d and having its ends bent according to the diameter of the tube. It will be readily understood that the bottom of the guides 2" forms a raising cam for the fingers cl, and consequently for the tube 0? when the sliding member h is pulled outward. When, on the contrary, the sliding member or driver is pushed toward the interior, the weight of the tube and the upper side of the guide bring the bypass tube back to the normal position of full lighting.

Owing to the fingers d resting on the bottom of the guides c" of the member h, it is easy to keep the loy-pass tube in any desired intermediate position.

The corrugated sleeve f inserted between the by-pass tube and the wick holder tube,

deredparts, and with soldering.

enables the said by-pass tube to be widened, and thus a wider and more powerful flame can be obtained.

It is obvious that the constructional details of the Controlling member for the bypass tube independent of the gallery, can be varied. Thus, in the construction shown in Figs. 5 to 9, the construction is simplified by doing away with a certain number of sol- Io that end, aguide 9 in which the sliding member 7L controlling the by-pass tube travels, is formed by folding a lug Z provided in an extension of the disk 9 forming the support ,of the gallery. Fig. 9 shows the lug before piece with the support of the gallery 9', and

not, as before, by fixed soldered parts. On the other hand, in the construction shown in Figs. 5 to 9, the fingers d which were formerly made on a half-ring soldered to the bypass tube, are, as shown in Fig. 8, obtained by means of lugs cZ cut out in the body of the bypass tube and raised to 90 relatively to the surface of the latter.

Claims.

1. In a lamp burner, the combination, with the gallery, its support, and a centrally located sleeve carried by the latter and proecting into the former; of a wick tube arranged concentrically wlth sald sleeve and projecting through the same; an axially-adjustable by-pass tube interposed between said wick tube and said sleeve and having a corrugated sleeve connected to its inner wall; and means for adjusting said by-pass tube.

2. In a lamp burner, the combination, with a gallery, and a support therefor provided with a guide; of a wick tube; an axially-adjustable by-pass tube encircling the same and provided adjacent its lower end with a pair of diametrically-opposed proj ections; and an element for operating said by-pass tube slidably mounted in said guide and provided at its inner end with a fork whose prongs are upwardly inclined and have guides which are engaged by said pro 'jections.

3. In a lamp burner, the combination, with a gallery, a support therefor provided with a guide, and a centrally-located'sleeve carried by said support and projecting into said gallery; of a wick tube arranged concentrically with said sleeve and projecting through the same; an axially-adjustable bypass tube interposed between said sleeve and said wick tube and provided at its lower end with a pair of diametrically-opposed prpjections; and an element for operating said by-pass tube slidably mounted in said guide and provided at its inner end with a fork whose prongs have oblique guides which are engaged by said projections.

4:. In a lamp burner, the combination, with a gallery, a support therefor provided with a guide, and a centrally-located sleeve carried by said support and projecting into said gallery; of a wick tube arranged concentrically with said sleeve and projecting through the same; an axially-adjustable bypass tube interposed between said sleeve and said wick tube and provided at its lower end with a pair of diametrically-opposed projections; a corrugated sleeve secured to the inner wall of said by-pass tube; and an element for operating said by-pass tube slidably mounted in said guide and having at its inner end a fork whose prongs areprovided with oblique guides which are engaged by said projections.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHARLES VESSIERE.

lVitnesses:

EMILE LEDRET,

H. O. Come.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

